How Unknown Leon's ERA Compares to Similar Players

Unknown Leon posted a career ERA of 2.45, well below the league average of 4.72 — a mark that ranked among the best of his era. Across 1 season, the ERA arc showed a promising start, with limited data making longer-term conclusions premature. With 1 season of data, the ERA arc was above league norms — too limited for reliable trend analysis. Some season-to-season variance runs through the career line, but the career average remained well above league norms across 1 season.

Unknown Leon Lifetime ERA and Similar Stats

Stats similar to ERA for Unknown Leon
Unknown Leon
ERA
Unknown Leon
Component ERA
Unknown Leon
Defense Independent ERA
Career2.452.563.39
Season Avg.2.452.563.39
162 Game Avg.2.452.563.39
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Unknown Leon ERA Per Season

Unknown Leon's ERA for each season of his MLB career, plotted against that year's league average. Switch between comparisons — American Negro League, Hall of Fame, RF, Unknown, or players born in the same country — to see how he stacked up year by year.
Unknown Leon ERA per season line chart

Unknown Leon ERA by Team

Unknown Leon's career ERA totals broken down by each team he played for, ordered by when he first joined that team.
Unknown Leon career ERA by team bar chart

Unknown Leon ERA Year-Over-Year Change

A waterfall chart tracking how Unknown Leon's career ERA shifted from season to season. Each bar represents the change added to his career total that year, making peak and decline phases easy to spot.
Unknown Leon ERA year-over-year waterfall chart

Unknown Leon ERA Distribution vs. Comparable Players

Each box summarizes Unknown Leon's seasonal ERA alongside a selected comparison group across all seasons he played. The box covers the middle 50% of seasons, the center line is the median, and the whiskers extend to the min and max. A tighter box means more consistency; a higher median means more output. Use the selector to switch comparison groups.
Unknown Leon ERA distribution box chart versus comparable players

Unknown Leon ERA — Season-by-Season Breakdown

Every season of Unknown Leon's MLB career with ERA alongside league, Hall of Fame, positional, birth region, and country-of-birth averages for that year. Career totals include sum, average, min, max, and median.

Note: A dash (—) means no qualifying players existed in that comparison group for that season. Most commonly this happens for the Hall of Fame group.
Unknown Leon ERA season-by-season breakdown table